CN104335446A - Portable device capable of controlling output characteristics of adaptor, and corresponding method - Google Patents
Portable device capable of controlling output characteristics of adaptor, and corresponding method Download PDFInfo
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- CN104335446A CN104335446A CN201480001258.1A CN201480001258A CN104335446A CN 104335446 A CN104335446 A CN 104335446A CN 201480001258 A CN201480001258 A CN 201480001258A CN 104335446 A CN104335446 A CN 104335446A
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- 238000000034 method Methods 0.000 title claims description 31
- 238000007600 charging Methods 0.000 claims abstract description 155
- 238000004891 communication Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 7
- 238000010276 construction Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 238000010277 constant-current charging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
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- H02J7/045—
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
- H02J7/0044—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction specially adapted for holding portable devices containing batteries
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0069—Charging or discharging for charge maintenance, battery initiation or rejuvenation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/00032—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by data exchange
- H02J7/00034—Charger exchanging data with an electronic device, i.e. telephone, whose internal battery is under charge
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
A portable device capable of controlling output characteristics of an adaptor used for charging a battery of the portable device includes a sensing circuit and a controlling circuit. The sensing circuit senses a condition of the battery. The controlling circuit controls the adaptor to adjust its output characteristics based on the condition of the battery.
Description
Technical field
The present invention relates to the charging scheme controlling adapter, and more particularly, relate to mancarried device and the corresponding method of the output characteristic that can control adapter.
Background technology
In general, when existing adapter is connected to electronic installation to charge to the battery of electronic installation via communication interface, existing adapter adopts constant current to charge to battery usually in constant-current mode.But, in some cases, considering circuit cost and poor power loss, can only adopting less constant current for charging to battery.Less electric current instruction must consume the longer time period for existing adapter and charge to battery.This shortcoming not accept by user.Therefore, novel charging scheme is provided to be very important to overcome the shortcoming of prior art.
Summary of the invention
Therefore, an object of the present invention is to provide the mancarried device and method that can control for the output characteristic of the adapter charged to the battery of mancarried device, to solve the above problems.
According to embodiments of the invention, a kind of mancarried device that can control output characteristic to the adapter that the battery of mancarried device charges is disclosed.Mancarried device comprises sensing circuit and control circuit.The condition of sensing circuit senses battery.Its output characteristic has been adjusted since the condition control adapter of control circuit based on battery.
According to embodiments of the invention, for adopting mancarried device to control to comprise the method for the output characteristic of the adapter that the battery of mancarried device charges: the condition of sensing battery; And control adapter to adjust its output characteristic based on the condition of battery.
According to embodiments of the invention, a kind of adapter for charging to the battery of mancarried device is disclosed.The output characteristic of adapter is configurable according to the condition of battery.
According to embodiment, mancarried device via various communication interface and controllable adapter communications, and can control the output characteristic of controllable adapter, to reach the object of quick charge, avoid pyrolytic damage, strengthen/improve whole charge efficiency, and save more electric power.
After having read the following detailed description of the preferred embodiments be illustrated in various figure and accompanying drawing, these and other objects of the present invention will become obvious to those of ordinary skill in the art.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of charging system according to an embodiment of the invention.
Fig. 2 is the schematic diagram of the ESD protection area of the conductive circuit elements illustrated as shown in Figure 1.
Fig. 3 is the schematic diagram illustrating the I-V curve of adapter according to the embodiment of Fig. 1.
Fig. 4 is the control flow chart of the operation of the charging system as shown in Figure 1 of embodiment according to the quick charge in the present invention.
Embodiment
Please refer to Fig. 1, Fig. 1 is the schematic diagram of charging system 100 according to an embodiment of the invention.Charging system 100 comprises adapter 105 (such as, AC to DC (AC-to-DC) is travelled adapter (but not limiting)), and mancarried device 110 (such as, mobile device (such as, intelligent telephone equipment, panel computer)).Mancarried device 110 comprises conductive circuit elements 1101, resistance 1102, battery 1103, sensing circuit 1104 and control circuit 1105.Sensing circuit 1104 and control circuit 1105 can be regarded as can by the battery charger apparatus using integrated circuit (IC) chip to implement.Adapter 105 for converting AC power to DC charging voltage Vchg and charging current Ichr, and provides charging voltage Vchg and charging current Ichr for charging to the battery 1103 of mancarried device 110.In addition, adapter 105 can based on the different condition of battery 1103, for battery 1103 provides various different charging voltage and charging current.The output characteristic of adapter 105 is configurable according to the condition of battery 1103.The condition of battery 1103 (such as, cell voltage) can be informed adapter 105 by mancarried device 110, and controls adapter 105 and dynamically export different charging voltages and charging current under different conditions.Preferably, this can realize charging to the battery 1103 of mancarried device 110 fast, and avoids power loss to exceed power loss threshold value.Conductive circuit elements 1101 in the present embodiment implements (but not limiting) with bipolar junction transistor or MOS transistor.Battery 1103 comprises at least one unit (cell).Sensing circuit 1104 is coupled to battery 1103, and for sensing the condition of battery 1103.Such as, sensing circuit 1104 senses the cell voltage Vbat of battery 1103 to generate the sensing result of cell voltage Vbat.Control circuit 1105 is coupled to sensing circuit 1104, and has adjusted its output characteristic since controlling adapter 105 based on the condition of battery 1103.Control circuit 1105 based on the sensing result of cell voltage Vbat, can be determined from the charging voltage desired by adapter supply and/or charging current.Control circuit 1105 passes through via specific communication interface (such as, VBUS line via usb communication interface, the proprietary communication lines via usb communication interface or via any communication interface between adapter 105 and mancarried device 110) send control signals to adapter 105, the charging voltage determined and charging current are informed adapter 105.According to control signal, adapter 105 can provide the charging voltage and charging current determined by mancarried device 110, for charging to battery 1103.Particularly, in order to realize quick charge and Thermal protection simultaneously, mancarried device 110 controls adapter 105 to supply maximum charging current as much as possible to battery 1103.The condition that the maximum charging current that can be provided by adapter 105 depends on battery 1103 and the power loss threshold value associated with Thermal protection.In the present embodiment, condition pilot cell voltage Vbat, and the power loss threshold value Pdmax of conductive circuit elements can think the power loss threshold value that associates with Thermal protection.But this is not intended as restriction.In other embodiments, the power loss threshold value associated from Thermal protection can be the threshold value of another the different circuit element be contained in mancarried device 110.In order to realize quick charge and avoid the power loss of conductive circuit elements 1101 to exceed power loss threshold value Pdmax, after the maximum charging current that can be provided by adapter 105 is provided, control circuit 1105 controls adapter 105 to adjust and then to provide charging voltage Vchg as early as possible, and the charging current provided with toilet and charging voltage can not cause power loss to exceed power loss threshold value Pdmax.The relation of the power loss caused by conductive circuit elements 1103 can calculate according to following formula:
Pd＝(Vchg-Vbat)×Ichr
Wherein Pd indicated horsepower loss, Vchg indicates the output charging voltage exported by adapter 105 for charging to battery 1103, Vbat pilot cell voltage, and Ichr indicates charging current.Cell voltage Vbat can be sensed by sensing circuit 1104, and therefore, control circuit 1105 adjustable charging current Ichr also exports charging voltage Vchg, to maximize charging current Ichr and to avoid power loss Pd to exceed power loss threshold value Pdmax.That is, in order to increase charging current Ichr as far as possible, mancarried device 110 is set to reduce the voltage difference exported between charging voltage Vchg and cell voltage Vbat.Therefore, by maximizing the charging current Ichr that can supply from adapter 105, battery 1103 can be rapidly charged, and this significantly reduces the whole charging interval.In this case, control circuit 1105 can arrange and export charging voltage Vchg is voltage level, this voltage level, lower than the level calculated based on maximized charging current Ichr, so that corresponding power loss Pd is slightly less than power loss threshold value Pdmax, and does not damage conductive circuit elements 1101.That is, after determining and configuring the charging current Ichr that provided by adapter 105, mancarried device 110 controllable adapter 105 is optionally to export or to supply different output recharge voltage level.Such as, the first level can be determined based on above-mentioned formula and maximized charging current, and second electrical level can be the level slightly lower than the first level.According to identical charging current, the selection of supplying different output recharge voltage level provides the flexibility exporting different capacity.Mancarried device 110 controls of multiple charging levels that adapter 105 selects to correspond to different capacity at different conditions, and provides selected voltage to battery 1103.
As mentioned above, mancarried device 110 (or control circuit 1105) can be used for configuring based on cell voltage Vbat the charging current Ichr supplied by adapter 105, the output charging voltage Vchg provided by adapter 105 is provided according to configured charging current Ichr, and the charging current Ichr that control adapter 105 exports determined output charging voltage Vchg and configures.Therefore, the mancarried device 110 comprising sensing circuit 1104 and control circuit 1105 can control the output characteristic of adapter 105.Output characteristic can indicate (but being not limited to) charging current Ichr or export charging voltage Vchg.In other example, output characteristic can comprise at least one in AC to DC switching frequency, AC to DC bias current, output voltage precision, voltage ripple and dynamic load.Mancarried device 110 also can be used at least one characteristic by adjustment AC to DC switching frequency, AC to DC bias current, output voltage precision, voltage ripple and dynamic load etc., control the output characteristic of adapter 105, to adjust charging current Ichr.
It should be noted that, according to the formula of the power loss of conductive circuit elements 1101, in a first embodiment, control circuit 1105 determining/configure charging current Ichr after, adjustable exports charging voltage Vchg, or in a second embodiment, determining/configure charging voltage Vchg after, adjustable charging current Ichr.
In an embodiment, conductive circuit elements 1101 can be implemented with bipolar junction transistor.When adapter 105 pairs of batteries 1103 charge, bipolar junction transistor closes and becomes saturated.Voltage drop between the collector and emitter of bipolar junction transistor is labeled as V
cE, it can equal in some instances as 0.25V – 0.4V.The voltage difference exported between charging voltage Vchg and cell voltage Vbat can by V
cE+ Ichr*R represents, wherein the resistance value of the resistance 1102 of R instruction between bipolar junction transistor and battery 1103.Resistance value is very little, and can ignore.Voltage difference between output voltage Vchg and cell voltage Vbat is no better than V
cE.Therefore, maximum charging current Ichr can be calculated by following formula or estimate:
Imax indicates maximum charging current Ichr.Such as, if power loss threshold value Pdmax is designed to 0.7W, then maximum charging current Imax can be configured to 2.8A – 1.75A, and it depends on the voltage drop V between the collector electrode of bipolar junction transistor and emitter
cE.If voltage drop V
cEequal 0.25V, then maximum charging current Imax can be configured to 2.8A.If voltage drop V
cEequal 0.4V, then maximum charging current Imax can be configured to 1.75A.The control circuit 1105 of mancarried device 110 is set to control adapter 105 to export the charging current Ichr of maximum charging current Imax as battery 1103, and output equals voltage drop V
cEwith the output charging voltage Vchg of the summation of cell voltage Vbat.The output charging voltage Vchg supplied by adapter 105 dynamically can adjust according to the change of cell voltage Vbat, because cell voltage Vbat can be sensed by sensing circuit 1104, and voltage drop V
cEcan determine.That is, mancarried device 110 based on the varying level of cell voltage Vbat, can control adapter 105 with the maximum current Imax of stable output and different recharge voltage level.Therefore, battery 1103 can with maximum charging current Imax with constant-current mode quick charge.
Please refer to Fig. 2, Fig. 2 is the schematic diagram of the ESD protection area of diagram conductive circuit elements 1101 (such as, bipolar junction transistor) as shown in Figure 1.As shown in Figure 2, except configuration charging current Ichr is except maximum charging current Imax, control circuit 1105 also configurable charging current Ichr is any electric current being less than maximum charging current Imax, and controllable adapter 105 adjustment exports charging voltage Vchg or do not adjust output charging voltage Vchg.The dashed region instruction of Fig. 2 to close and when becoming saturated, conductive circuit elements 1101 can not damage due to the pyrolytic damage caused by power loss when conductive circuit elements 1101.That is, dashed region represents the ESD protection area of conductive circuit elements 1101.Such as, charging current Ichr can be configured to by mancarried device 110 electric current (such as, 368mA, 500mA or 777mA) being less than maximum current Imax (such as, 1.75A).When the level of cell voltage Vbat equals 3.6V, mancarried device 110 (or control circuit 1105) sets accordingly and exports charging voltage Vchg is 5.5V, 5V or 4.5V.The exportable more or maximum power of combination (or other combination of voltage and current) indication adapter 105 of 500mA and 5V.In addition, when charging current Ichr is configured to the electric current being less than maximum current Imax by mancarried device 110, mancarried device 110 controllable adapter 105 is to export different voltage levels for charging.Such as, when charging current Ichr is configured to the 777mA electric current being less than 1.75A by mancarried device 110, mancarried device 110 controllable adapter 105 is to export different voltage level 4V – 4.5V for charging.Similarly, when charging current Ichr to be configured to the electric current of 500mA by mancarried device 110, mancarried device 110 controllable adapter 105 is to export different voltage level 4V – 5V for charging.Charging current Ichr becomes less, then the scope exporting recharge voltage level becomes wider.It should be noted that, the example be shown in Fig. 2 is only used for illustrative object, and is not intended as restriction of the present invention; In other example, when adapter 105 charges to battery 1103 constantly, cell voltage Vbat can change in time, and the ESD protection area of conductive circuit elements 1101 dissimilates accordingly.In addition, maximum power loss (the i.e. power loss threshold value) 0.7W of conductive circuit elements is only used for illustrative object, and is not intended as restriction of the present invention.
Please refer to Fig. 3, Fig. 3 is the schematic diagram illustrating the I-V curve of adapter 105 according to the embodiment of Fig. 1.Control circuit 1105 is set to adjust charging current Ichr after determining/configure to export charging voltage Vchg.As shown in Figure 3, such as, control circuit 1105 or mancarried device 110 controllable adapter 105 with the voltage of the electric current (i.e. charging current Ichr) and 5V of supplying 1A (namely exporting charging voltage Vchg) for charging to battery 1103.Adapter 105 can provide the power of 5W.Alternatively, then control circuit 1105 or mancarried device 110 controllable adapter 105 to reduce and to configure that to export charging voltage Vchg be 4.6V lower than 5V, and control adapter 105 and in the scope from 1000mA – 1086mA, select a current value as charging current Ichr for charging to battery 1103.If charging current Ichr is configured to 1086mA, this shows that adapter 105 still provides the power output of almost 5W.Adapter 105 keeps its power output to be 5W substantially.And charging current Ichr still can be configured to 1A.Alternatively, then control circuit 1105 or mancarried device 110 controllable adapter 105 to reduce and to configure that to export charging voltage Vchg be 3.8V lower than 4.6V, and control adapter 105 and in the scope from 1000mA – 1315mA, select a current value as charging current Ichr for charging to battery 1103.If charging current Ichr is configured to 1315mA, this shows that adapter 105 still provides the power output of almost 5W.Adapter 105 keeps its power output to be 5W substantially.And charging current Ichr still can be configured to 1A or 1.086A.Namely, when charging voltage Vchg is configured to lower level by control circuit 1105 (or mancarried device 110), can increase and be fed to the charging current Ichr of battery 1103 for charging to battery 1103 fast by adapter 105, especially in constant current charging mode, and adapter 105 can keep its power output to be specified peak power output (such as, 5W) substantially.
In order to make reader easily understand spirit of the present invention, provide Fig. 4 with the control flow chart of display according to the operation of the charging system 100 as shown in Figure 1 of the embodiment of the quick charge in the present invention.Suppose to reach substantially identical result, the step being shown in the flow chart in Fig. 4 does not need with shown precise sequence and needs not be continuous print, that is, can insert other step.Step is described in detail as follows:
Step 405: the control circuit 1105 (i.e. charging host) of mancarried device 110 communicates with adapter 105 via specific communication interface (such as, usb communication interface);
Step 410: the control circuit 1105 of mancarried device 110 checks whether adapter 105 is controllable adapters.If adapter 105 is controllable, then flow process enters step 415, otherwise flow process enters step 450;
Step 415: the control circuit 1105 of mancarried device 110 is according to power loss threshold value Pdmax and the voltage drop V striding across conductive circuit elements
cEdetermine or calculate maximum charging current Imax, and charging current Ichr is configured to maximum charging current Imax;
Step 420: sensing circuit 1104 senses cell voltage Vbat, and control circuit 1105 is according to sensed cell voltage Vbat and voltage drop V
cEthe charging voltage Vchg provided by adapter 105 is provided gradually;
Step 425: sensing circuit 1104 is set to sensing charging current Ichr and checks whether charging current Ichr reaches the maximum charging current Imax be configured.If charging current Ichr reaches maximum charging current Imax, then flow process enters step 430, otherwise flow process enters gets back to step 420.
Step 430: sensing circuit 1104 is placed through serviceability temperature transducer to detect the operating temperature of conductive circuit elements 1101, senses and checks whether the actual power dissipation of conductive circuit elements 1101 exceedes power loss threshold value Pdmax.If the temperature detected is lower than temperature threshold, this can indicate the actual power dissipation of conductive circuit elements 1101 not exceed power loss threshold value Pdmax, and flow process enters step 435; Otherwise flow process enters step 450;
Step 435: the control circuit 1105 of mancarried device 110 sets/configure the output charging voltage Vchg of the adjustment provided by adapter 105;
Step 440: sensing circuit 1104 is set to sensing cell voltage Vbat, and control circuit 1105 is set to estimate whether the cell voltage Vbat sensed changes.If the cell voltage Vbat sensed changes, then flow process enters step 420; Otherwise flow process enters step 445.
Step 445: control circuit 1105 controls and keeps adapter 105 to export the output charging voltage Vchg setting in step 435/configure; And
Step 450: terminate.
In step 405, mancarried device 110 is set to communicate with adapter 105 via specific communication interface (such as, usb communication interface).In practice, usb communication interface can be implemented by using USB cable, and mancarried device 110 can via data wire (namely, D+ or D-) and/or the supply of electric power line (i.e. VBUS) of USB cable send information or order to adapter 105, to control/to adjust the output characteristic of adapter 105.It should be noted that, above-mentioned example does not mean it is restriction of the present invention.Use different communication interface or use different communication protocol to control/to adjust other example of the output characteristic of adapter 105, scope of the present invention should be fallen into.
In step 410, before the output characteristic controlling adapter 105, mancarried device 110 is set to check whether adapter 105 is the controllable adapters can supporting this controllable scheme.In the present embodiment, adapter 105 is controllable adapters, and flow process enters step 415, so that mancarried device 110 starts the output characteristic controlling adapter 105.But if do not support that another adapter of this controllable scheme is connected to mancarried device 110, then flow process enters step 450, and mancarried device 100 is not set to the output characteristic controlling this adapter.
In step 415, control circuit 1105 is set to charging current Ichr to be configured to maximum charging current Imax, to reach the object of quick charge.But in other embodiments, charging current Ichr can be configured to the electric current being slightly less than maximum charging current Imax by control circuit 1105, to reach the object of quick charge.This amendment also can reduce the whole charging interval effectively.
The above-mentioned temperature sensor adopted by sensing circuit 1104 can by using negative temperature coefficient (Negative Temperature Coefficient, NTC) thermistor or positive temperature coefficient (Positive Temperature Coefficient, PTC) thermistor are implemented.The amendment of the enforcement of temperature sensor should fall into scope of the present invention.
In addition, mancarried device 110 can by the condition notification of battery 1103 to adapter 105, and controls adapter 105 and dynamically provide/supply the different output characteristic corresponding to different operation modes.According to the third embodiment of the invention, adapter 105 comprises normal mode and green model (or being called park mode).In the normal mode, the control circuit 1105 of mancarried device 110 controls adapter 105 to provide normal output characteristic (such as, normal output power).Normal output characteristic can comprise AC-to DC switching frequency, AC-to DC bias current, output voltage precision, voltage ripple and/or dynamic load etc.Control circuit 1105 controllable sensing circuit 1104, to sense the condition (that is, loading condition) of battery 1103, if do not require that adapter 105 pairs of batteries 1103 charge, controls adapter 105 to reduce the output characteristic of adapter 105.In this case, control circuit 1105 is set to control adapter 105 to exit from normal mode, and enters green model or park mode.That is, mancarried device 110 can sense loading condition, and exits from normal mode according to sensing result control adapter 105, and enters green model or park mode.In addition, also controllable adapter 105 is to reduce output characteristic for control circuit 1105, if control circuit 1105 estimates that mancarried device 110 is switched to light-load conditions from heavy load condition, control adapter 105 is to enter green model or park mode.
In addition, in other embodiments, adapter 105 can be designed as the adapter apparatus operating in green model or park mode according to default setting.Under green model or park mode, the control circuit 1105 of mancarried device 110 control adapter 105 with provide minimizing/output characteristic (such as, lower power output) that reduces.Control circuit 1105 can check whether adapter 105 is connected to mancarried device 110 to charge to battery 1103, and controllable adapter 105 is to increase the output characteristic of adapter 105, if and require that adapter 105 pairs of batteries 1103 charge, control adapter 105 to exit to enter normal mode from green model or park mode.That is, mancarried device 110 can sense loading condition, and controls adapter 105 according to sensing result and to exit from green model or park mode and to enter normal mode.In addition, if control circuit 1105 estimates that mancarried device 110 is switched to heavy load condition from light-load conditions, control circuit 1105 goes back controllable adapter 105 to increase adapter 105 to control adapter 105 entering normal mode.
In addition, mancarried device 110 as shown in Figure 1 adopts linear charger structure; But this is not intended as restriction of the present invention.The charger construction of other type also can be applicable to mancarried device 110.Such as, mancarried device 110 also can adopt switch mode charger construction.This also drops into scope of the present invention.
According to the above embodiments, mancarried device 110 can communicate with controllable adapter 105 via various communication interface, and control the output characteristic of controllable adapter 105, to reach the object of quick charge, avoid pyrolytic damage, strengthen/improve whole charge efficiency, and save more power.
Those skilled in the art will easily observe, and when retaining instruction of the present invention, can carry out many amendments and replacement to apparatus and method.Therefore, above openly should being interpreted as only is limited by the spirit of appended claim and boundary.
Claims (25)
1. a mancarried device, can control, for the output characteristic of the adapter charged to the battery of described mancarried device, to it is characterized in that, comprise:
Sensing circuit, for sensing the condition of described battery; And
Control circuit, is coupled to described sensing circuit, for controlling described adapter to adjust the output characteristic of described adapter based on the described condition of described battery.
2. mancarried device as claimed in claim 1, it is characterized in that, described output characteristic comprises at least one in charging current, charging voltage, switching frequency, bias current, output voltage precision, voltage ripple and dynamic load.
3. mancarried device as claimed in claim 1, it is characterized in that, described sensing circuit is set to the cell voltage sensing described battery, and described control circuit is set to control described adapter according to the cell voltage of described sensing.
4. mancarried device as claimed in claim 3, is characterized in that, described control circuit is set to configure charging current, and then according to the cell voltage adjustment charging voltage of described sensing.
5. mancarried device as claimed in claim 3, it is characterized in that, described control circuit is set to charging current to be configured to maximum charging current, and described maximum charging current can be supplied by described adapter based on the cell voltage of described sensing.
6. mancarried device as claimed in claim 5, it is characterized in that, described control circuit is set to determine according to described maximum charging current and power loss threshold value the described charging voltage that provided by described adapter, and controls described adapter to export the described output voltage determined and described maximum charging current.
7. mancarried device as claimed in claim 6, is characterized in that, also comprise:
Conductive circuit elements, between the input being coupled in described battery and described mancarried device;
Wherein said sensing circuit is set to sense the voltage drop striding across described conductive circuit elements, and described control circuit is set to estimate described maximum charging current according to described power loss threshold value and described voltage drop.
8. mancarried device as claimed in claim 3, it is characterized in that, the voltage difference between the described charging current determined by described control circuit and the cell voltage of described charging voltage and described sensing is inversely proportional to.
9. mancarried device as claimed in claim 3, is characterized in that, described control circuit is set to configure charging voltage, and then according to the cell voltage adjustment charging current of described sensing.
10. mancarried device as claimed in claim 9, it is characterized in that, described control circuit is set to configure described charging voltage, and then adjusts described charging current according to the cell voltage of described sensing, substantially supplies/provide rated output power to keep described adapter.
11. mancarried devices as claimed in claim 1, it is characterized in that, described sensing circuit is set to the load sensing described battery, and described control circuit is set to control described adapter to reduce the described output characteristic of described adapter, and when described load is switched to light-load conditions from heavy load condition, control described adapter to enter green model or park mode.
12. mancarried devices as claimed in claim 1, it is characterized in that, described sensing circuit is set to the load sensing described battery, and described control circuit is set to control described adapter to promote the described output characteristic of described adapter, and when described load is switched to heavy load condition from light-load conditions, controls described adapter and exit from green model or park mode.
13. 1 kinds adopt mancarried device to control the method for the output characteristic of adapter, and described adapter is used for charging to the battery of described mancarried device, and it is characterized in that, described method comprises:
Sense the condition of described battery; And
Described condition based on described battery controls described adapter to adjust the output characteristic of described adapter.
14. adopt mancarried device to control the method for the output characteristic of adapter as claimed in claim 13, it is characterized in that, described output characteristic comprises at least one in charging current, charging voltage, switching frequency, bias current, output voltage precision, voltage ripple and dynamic load.
15. adopt mancarried device to control the method for the output characteristic of adapter as claimed in claim 13, and it is characterized in that, the step sensing the described condition of described battery comprises:
Sense the cell voltage of described battery; And
Control described adapter to comprise with the step of the output characteristic adjusting described adapter based on the described condition of described battery:
Described adapter is controlled according to the cell voltage of described sensing.
16. adopt mancarried device to control the method for the output characteristic of adapter as claimed in claim 15, and it is characterized in that, the step controlling described adapter according to the cell voltage of described sensing comprises:
Configuration charging current; And
According to the cell voltage adjustment charging voltage of described sensing.
17. adopt mancarried device to control the method for the output characteristic of adapter as claimed in claim 15, and it is characterized in that, the step controlling described adapter according to the cell voltage of described sensing comprises:
Based on the cell voltage of described sensing, charging current is configured to the maximum charging current can supplied by described adapter.
18. adopt mancarried device to control the method for the output characteristic of adapter as claimed in claim 17, and it is characterized in that, the step controlling described adapter according to the cell voltage of described sensing also comprises:
According to described maximum charging current and power loss threshold value, determine the described charging voltage provided by described adapter; And
Control described adapter to export the described output voltage determined and described maximum charging current.
19. adopt mancarried device to control the method for the output characteristic of adapter as claimed in claim 18, it is characterized in that, also comprise:
Sensing strides across the voltage drop of the conductive circuit elements between the input being coupled in described battery and described mancarried device; And
According to described power loss threshold value and described voltage drop, estimate described maximum charging current.
20. adopt mancarried device to control the method for the output characteristic of adapter as claimed in claim 15, and it is characterized in that, the voltage difference between the cell voltage of described charging current and described charging voltage and described sensing is inversely proportional to.
21. adopt mancarried device to control the method for the output characteristic of adapter as claimed in claim 15, and it is characterized in that, the step controlling described adapter according to the cell voltage of described sensing comprises:
Configuration charging voltage; And
According to the cell voltage adjustment charging current of described sensing.
22. adopt mancarried device to control the method for the output characteristic of adapter as claimed in claim 21, and it is characterized in that, the step controlling described adapter according to the cell voltage of described sensing also comprises:
Described adapter is kept substantially to supply/provide rated output power.
23. adopt mancarried device to control the method for the output characteristic of adapter as claimed in claim 13, and it is characterized in that, the step sensing the described condition of described battery comprises:
Sense the load of described battery; And
Described method also comprises:
Control described adapter to reduce the described output characteristic of described adapter, and when described load is switched to light-load conditions from heavy cartridges condition, control described adapter to enter green model or park mode.
24. adopt mancarried device to control the method for the output characteristic of adapter as claimed in claim 13, and it is characterized in that, the step sensing the described condition of described battery comprises:
Sense the load of described battery; And
Described method also comprises:
Control described adapter to promote the described output characteristic of described adapter, and when described load is switched to heavy load condition from light-load conditions, controls described adapter and exit from green model or park mode.
25. 1 kinds of adapters, for charging to the battery of mancarried device, is characterized in that, the output characteristic of described adapter is configurable according to the condition of described battery.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361830486P | 2013-06-03 | 2013-06-03 | |
| US61/830,486 | 2013-06-03 | ||
| PCT/CN2014/079099 WO2014194810A1 (en) | 2013-06-03 | 2014-06-03 | Portable device capable of controlling output characteristics of adaptor, and corresponding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104335446A true CN104335446A (en) | 2015-02-04 |
| CN104335446B CN104335446B (en) | 2017-05-03 |
Family
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480003704.2A Active CN104885328B (en) | 2013-06-03 | 2014-06-03 | Adapter and method, device for adjusting the charging current that adapter is provided |
| CN201480001258.1A Expired - Fee Related CN104335446B (en) | 2013-06-03 | 2014-06-03 | Portable device capable of controlling output characteristics of adaptor, and corresponding method |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480003704.2A Active CN104885328B (en) | 2013-06-03 | 2014-06-03 | Adapter and method, device for adjusting the charging current that adapter is provided |
Country Status (4)
| Country | Link |
|---|---|
| US (2) | US9929576B2 (en) |
| EP (1) | EP3005527B1 (en) |
| CN (2) | CN104885328B (en) |
| WO (2) | WO2014194811A1 (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| US9929576B2 (en) | 2018-03-27 |
| CN104335446B (en) | 2017-05-03 |
| US20160049804A1 (en) | 2016-02-18 |
| WO2014194811A1 (en) | 2014-12-11 |
| CN104885328A (en) | 2015-09-02 |
| CN104885328B (en) | 2017-08-01 |
| WO2014194810A1 (en) | 2014-12-11 |
| EP3005527A1 (en) | 2016-04-13 |
| EP3005527A4 (en) | 2016-08-17 |
| US20160164324A1 (en) | 2016-06-09 |
| EP3005527B1 (en) | 2018-03-14 |
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